Overview
The HMC908ALC5TR-R5, produced by Analog Devices Inc., is a compact gallium arsenide (GaAs) monolithic microwave integrated circuit (MMIC) designed as an in-phase/quadrature (I/Q) downconverter. This device is optimized for microwave radio applications, particularly in the frequency range of 9 GHz to 12 GHz. It features a leadless, RoHS-compliant ceramic leadless chip carrier package, making it a smaller and more efficient alternative to traditional hybrid style image rejection mixer downconverter assemblies.
Key Specifications
| Parameter | Value | Notes |
|---|---|---|
| Frequency Range (RF) | 9 GHz to 12 GHz | |
| Local Oscillator (LO) Frequency Range | 8.5 GHz to 15.5 GHz | |
| Intermediate Frequency (IF) Range | dc to 3.5 GHz | |
| Conversion Gain | 11 dB | Small signal conversion gain |
| Noise Figure | 2 dB | |
| Image Rejection | 25 dB at 100 MHz | |
| LO Drive Level | -4 dBm to +6 dBm | |
| LNA Bias Current | 53 mA at 3 V (typical) | |
| LO Driver Amplifier Bias Current | 100 mA at 5 V (typical) | |
| Package Type | Leadless, RoHS compliant ceramic leadless chip carrier |
Key Features
- Compact Design: The HMC908ALC5TR-R5 is designed in a compact, leadless package, making it ideal for space-constrained applications.
- Image Rejection Mixer: The device includes an image rejection mixer that eliminates the need for a filter following the low noise amplifier (LNA), reducing thermal noise at the image frequency.
- I/Q Mixer Outputs: Provides separate I and Q mixer outputs, requiring an external 90° hybrid to select the desired sideband.
- Low Noise Amplifier (LNA): Self-biased LNA with a bias current of 53 mA at 3 V.
- LO Driver Amplifier: Self-biased LO driver amplifier with a bias current of 100 mA at 5 V, compatible with Analog Devices’ wideband synthesizer portfolio.
- Wide Frequency Range: Supports a wide range of RF and LO frequencies, making it versatile for various microwave radio applications.
Applications
The HMC908ALC5TR-R5 is optimized for point-to-point and point-to-multipoint microwave radio applications. It is particularly suited for systems requiring high image rejection and low noise figures, such as in wireless communication infrastructure, satellite communications, and radar systems.
Q & A
- What is the frequency range of the HMC908ALC5TR-R5? The device operates in the frequency range of 9 GHz to 12 GHz for RF input and 8.5 GHz to 15.5 GHz for LO input.
- What is the conversion gain of the HMC908ALC5TR-R5? The conversion gain is 11 dB.
- What is the noise figure of the HMC908ALC5TR-R5? The noise figure is 2 dB.
- How much image rejection does the HMC908ALC5TR-R5 provide? It provides 25 dB of image rejection at 100 MHz.
- What is the LO drive level required for the HMC908ALC5TR-R5? The LO drive level is between -4 dBm and +6 dBm.
- What type of package does the HMC908ALC5TR-R5 come in? It comes in a leadless, RoHS-compliant ceramic leadless chip carrier package.
- What are the typical bias currents for the LNA and LO driver amplifier? The LNA bias current is 53 mA at 3 V, and the LO driver amplifier bias current is 100 mA at 5 V.
- Does the HMC908ALC5TR-R5 require an external filter? No, the image rejection mixer eliminates the need for a filter following the LNA.
- What is the purpose of the external 90° hybrid in the HMC908ALC5TR-R5? The external 90° hybrid is required to select the desired sideband of operation.
- In what types of applications is the HMC908ALC5TR-R5 typically used? It is typically used in point-to-point and point-to-multipoint microwave radio applications.
